670nm电光调Q陶瓷激光器

为了进一步研究Nd∶YAG陶瓷激光器的红光波段,研制了一台重复频率为1 000 Hz的670 nm电光调Q Nd∶YAG陶瓷激光器.采用三个激光二极管列阵侧面抽运掺杂浓度为1.1at%、尺寸为Φ3×50 mm2的Nd∶YAG陶瓷晶体,根据实验测量的陶瓷晶体热透镜焦距,优化设计了折叠腔的各个参量,并对陶瓷晶体及倍频晶体热...

670 nm Electro-optical Q-switched Nd:YAG Ceramic Laser

For further study on red band of Nd:YAG ceramic laser, the electro-optical Q-switched ceramic laser at the wavelength of 670 nm is studied. Nd:YAG ceramic crystal with 1.1at% Nd doping and dimensions of Φ3×50 mm is side-pumped by three laser diodes positioned with 120°respectively. We designed folding cavity parameters based on the ceramic thermal focal length . The influences of thermal focal length in ceramic crystal and frequency crystal on spot radius are discussed. Using LN crystal to electro-optical Q-switched and KTP crystal typeⅡphase matching for intracavity frequency-doubling to realized laser. Under repetition rate of 1000Hz and single pulse pumped energy of 144 mJ, the output energy of 1.48 mJ and pulse width of 35 ns were obtained at 670 nm. The optic-optic efficiency was 1.03%.